Well, the classic algorithm for solving a planar maze with single entry/exit (on the outside) is to always follow the right wall (or always the left wall). That

Well, the classic algorithm for solving a planar maze with single entry/exit (on the outside) is to always follow the right wall (or always the left wall). That's what the algorithm in the game was apparently originally modelling, with some randomness thrown in so that not all guests do exactly the same thing.